ASDA first major retailer to assess impacts of its seafood business on ocean wildlife 

London – An independent report released today assesses the risks to ocean wildlife from incidental capture in the fisheries that supply seafood to UK supermarket chain Asda. The report examines threats to marine mammals, sharks, seabirds and sea turtles and finds risks associated with some of the best-selling seafood species in the UK including tuna, cod and haddock.

The study, conducted by Sustainable Fisheries Partnership, RSPB/Birdlife International and Whale and Dolphin Conservation, comprehensively assessed the “bycatch,” the capture of non-target species, in the fisheries that supply Asda’s seafood. The study identifies the fisheries that pose the greatest risk to endangered, threatened and protected (ETP) marine species and recommends actions that Asda can take to reduce these risks. The report was prepared in full collaboration with Asda and marks the first time that a major retailer has performed a systematic audit of the impacts of its seafood business on marine wildlife.

“Asda is committed to being a leader on sustainable seafood in the retail industry,” said Chris Brown, senior director for sustainable supply chains at Asda. “Asda wanted to study fisheries bycatch, because we know we need to do more to protect marine wildlife. This report now provides us with a clear plan of the improvements we need to achieve from our seafood suppliers. We hope that our actions will motivate others in the seafood sector to look at the impacts of their supply chains on the ocean environment.” 

“For seafood to be fully sustainable, we need to act at a much larger scale to address bycatch in commercial fisheries,” said Blake Lee-Harwood, chief programs officer at Sustainable Fisheries Partnership. “We have seen retailers effectively leverage major fisheries improvement by working in their supply chains. Now, we need retailers, like Asda, to be leaders and use their reach and influence to reduce the impacts of seafood production on ocean wildlife.” 

Key findings of the study include:

●      Longline fisheries for tuna in the Indian and Pacific oceans present serious risks to albatrosses, sharks, and sea turtles. 

●      Gillnet fisheries for cod and haddock in the northeast Atlantic Ocean present significant risks to seabirds and marine mammals, including porpoises and seals. 

●      American lobster pot and trap fisheries are an entanglement risk to whales, such as the endangered north Atlantic right whale, with their buoy lines at the surface. 

In response to the study, Rory Crawford, bycatch programme manager at RSBP/Birdlife International said: 

“We all want to know more about the food we eat so we can make the best decision that represents our values. This study shows that there is still much work to be done to tackle the capture of seabirds in fisheries – whether that’s albatrosses soaring over distant oceans or guillemots and fulmars plunging into uncertain seas closer to home. Happily, for many fishing gears there are solutions to this problem that can be implemented at minimal cost. Our hope is that this study results in better uptake of solutions and improved monitoring of fisheries, so the more retailers that participate in a similar process, the greater the potential impact.” 

Sarah Dolman, ending bycatch programme manager at Whale and Dolphin Conservation further commented: 

“Asda has taken this important step to recognise that bycatch of whales and dolphins, and other protected species might be a problem in their seafood supply chain and to investigate this further. Asda is the first supermarket to do this. Bycatch problems have been identified in a number of fisheries through this joint project and we will work with Asda to improve fisheries measures so their consumers can be confident that seafood bought does not harm whales, dolphins and porpoises. We urge other supermarkets to follow suit.” 

The report recommends that all retailers systematically assess their seafood supply chains for risks to ETP species and require suppliers to deliver changes in the fisheries that pose the greatest threat. These changes could include changing fishing equipment or techniques, avoiding certain baits or adopting other measures to avoid catching ETP species. 

According to the Sea Fish Industry Authority (Seafish), 97 percent of UK shoppers buy seafood, about 30 times a year or approximately every 12 days. Spurred by COVID-19 consumption shifts, UK retail seafood sales recently reached dramatic new highs in overall volume and value, topping 4 billion GBP, in the 12-month period ending in June 2020. 

The report can be found here. The full analysis from this research can be found here



Asda is the second largest supermarket chain in the United Kingdom, and is a wholly owned division of Walmart, the world’s largest retailer. Asda has been a leader in addressing issues of marine sustainability, including public disclosure of its seafood sourcing in the Ocean Disclosure Project. 

Sustainable Fisheries Partnership (SFP) is a nonprofit organization dedicated to rebuilding depleted fish stocks and reducing the environmental and social impacts of fishing and fish farming by engaging fishery stakeholders (communities, NGOs, government, etc.) and seafood businesses in every part of the supply chain. 

The RSPB is the UK’s largest nature conservation charity, inspiring everyone to give nature a home. Together with our partners, we protect threatened birds and wildlife so our towns, coast and countryside will teem with life once again. We play a leading role in BirdLife International, a worldwide partnership of nature conservation organisations. The Royal Society for the Protection of Birds (RSPB) is a registered charity. 

Whale and Dolphin Conservation (WDC) is the leading charity dedicated to the protection of whales and dolphins, working globally through campaigns, lobbying, advising governments, conservation projects, field research, rescue, education and much more. WDC operates through offices in the UK, North America, Germany and Australia. Our vision is a world where every whale and dolphin is safe and free.


Blake Lee-Harwood, Sustainable Fisheries Partnership

Gareth Brede, Royal Society for the Protection of Birds 

Danny Groves, Whale and Dolphin Conservation